Slate-cleaner.



A. BREIDER.

SLATE CLEANER.

APPLICATION FILED NOV. 28, 1910.

Patented Jan. 23, 1912.

ARMIN BREIDER, OZE NAGYVARAD, AUSTRIA- HUNGARY.

SLATE-CLEANER.

Specification of Letters Patent.

Patented Jan. 23, 1912,

Application filed November 28, 1910. Serial No. 594,564.

To all whom it may concern:

Be it known that I, ARMIN BREIDER, merchant, a subject of the Emperor ofAustria- Hungary, residing at Nagyvarad, Austria- Hungary, have inventednew and useful Improvements in Slate-Cleaners, of which the following isa specification.

My invention relates to certain improvements in slate-cleaners.

It has for its object the provision of a slate cleaner, which willeliminate certain inconveniences heretofore present in similarappliances known at this time.

Cleaners for slates and the like are already known, which consist in acasing, containing a filling of an absorbing material, which partiallyprojects on the one end of the casing. When using this known kind ofcleaners for the cleaning of slates and the like however theinconvenience appears, that the quantity of water, separated from thewetted absorbing material, varies according as the filling has just beenimpregnated with water or if after this impregnation the cleaner hasalready been in use for a certain time. Now in order to prevent thisinconvenience, according to the present invention the filling of thecase is composed of two diflerent layers of materials of difierentabsorbing effect, of which the inner layer, being made preferably fromasbestos is of greater capacity in absorbing water or capable of holdinga larger quantity of water, sufiicient in use for a longer space of timeand thus serving as a species of store-case for the water, while asecond layer adjoining to the inner one, partially projecting out of thecasing and preferably consisting of felt, is of less capacity inabsorbing water, so that this second layer will always complete itscontent of water, according to the consumption, by absorbing from thatcontained in the inner layer, thus always preserving its moisture at acertain uniform degree. By these means it is effected, that the layer,coming into contact with the surface to be cleaned, either directly orwith interposed permeable material, will under all circumstances presenta uniform content of water, as long as the store of water, accumulatedin the inner layer of the filling will suffice. Moreover by exerting apressure on the cleaner, stronger than the cleaning procedure makesnecessary, it is also possible to obtain temporarily in case of need agreater moisture content of the outer layer, since the water pushed outof the inner layer by the high pressure enters into the outer layer offelt, which opposes a greater resistance against compression, than theinner layer of asbestos.

In the drawings, forming part of this specification, Figure 1 is a sideview of a slate cleaner, constructed in accordance with my invention,Fig. 2 is a sectional view and Fig. 3 is a top plan view of the same.

Referring to the drawings, 1 indicates a metal casing, preferably ofcylindrical form, which casing contains a filling, consisting of twodifferent layers, one layer 2 of asbestos, being disposed in the middlepart of the casing and a second layer 3 of coarse spongy felt, beingdisposed adjoining the inner layer 2 and partially projecting out of thecasing. The absorbing effect of the inner layer 2 is much more efficientthan that of the outer layer 3. The latter is covered with a cap 4 ofpressed felt, buckskin or the like. The upper end of the casing 1, isclosed by a hollow detachable cover 5, having its lower end in the formof the frustum of a cone, which part, when the cover is in place,contacts with the inner side of the casing 1, insuring a tight joint. Onthe opposite end of the casing a hood 6, is placed when the cleaner isnot in use, thus protecting the moist projection and preventing it fromcoming in contact with articles.

When it is desired to put the cleaner in condition for use the cover 5is detached and the casing filled with water, as much as the two layers2 and 3 are capable of absorbing. Any excess of water must be pouredout. After setting up the cover 5 again, the cleaner is ready for usefor a rather long space of time. Of course the hood 6 must be taken offbefore every use. The slight pressure exerted on the felt cap 4: when inuse causes a slight compressing of the two layers 2 and 3, whereby asufficient quantity of water leaves the cleaner for washing a slate ofany kind. The inner layer 2, which contains most of the water is morecompressible than the outer layer 3, and therefore a partof the water ofthe layer 2 will leave the same and be absorbed by the outer layer 3which is less compressible. Thus the water content of this outer layerwill always be supplied from that of the layer 2. As besides, the twolayers, when the cleaner is not in use, are always protected, againstdrying up, the present slate cleaner will be availablewith one fillingof water f or an;

extremely long space of time.

This slate-cleaner can preferably be used for the slates used inconnection with card or billiard-playing. It will also be of greathrlazlp for wetting stamps and envelops or the li e.

Having now fully described my invention, what I claim as new and desireto secure by Letters Patent is-- A slate cleaner comprising incombination, a rigid casing having a closed and an 1 open end, a fillingof absorbent material for said casi ng projecting from the open endthereof, the upper portion of said filling having the greater absorbingcapacity, and a cup-shaped cap of permeable material inclosing the saidprojecting portion of said filling and having its upper margin clenchedto engage the said filling.

In testimony whereof I affix my signature in presence-of two witnesses.

ARMIN BREIDER. Y Witnesses: f

' ALFRED BERAN,

ADA MARIA BERGER.

Copies of this patent may be obtained for five centseach, by addressingthe Commissioner of Patents,

Washington, D. G.

